decision support system by simulation model (ajarn chat chuchuen)1 chapter 2 architecture of...

1Decision Support System by Simulation Model (Ajarn Chat Chuchuen)

CHAPTER 2

Architecture of Decision Support System

Decision Support System by Simulation Model (Ajarn Chat Chuchuen)

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2.1 Meaning Architecture of Decision Support System

What is Architecture of Decision Support System?

Structure of DSS componentsRelation between DSS componentsRelation between external

environment


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2.2 Advantage of architecture of DSS

Know how the component working Share resource by any department Make the sequence in the process Communicate between component Support group decision Support planning more efficiency


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2.3 Factors of DSS Architecture Development

Organization’s Strategy Consider in master plan and follow its

Level of Management Type of problem Structured Semi

structured Unstructured Characteristic of organization

business


5Decision Support Systems and Intelligent Systems, Efraim Turban and Jay E. Aronson, 6th edition,Copyright 2001, Prentice Hall, Upper Saddle River, NJ

2.4 Components of DSS Architecture


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4 Main components of DSS architecture

Data ManagementModel ManagementUser Interface ManagementKnowledge Management



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Tool for develop DSS

HardwareOperating System (OS)Network System SoftwareModeling tools



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Environment of DSS

UserProgrammerExternal Data



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Component of Data ManagementDatabaseDatabase Management System (DBMS)Data DirectoryQuery FacilityExtraction

2.5 Data Management


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2.5 Data Management : Structure

ExternalData

Sources Finance Marketing Production Personnel Other

Internal DataSources

ExtractionOrganizational

KB

Private,personal data

Corporatedata

warehouse

Interfacemanagement

ModelManagement

KBSubsystem

DecisionSupport

database

DBMS

Queryfacility

DataDirectory


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Captures/extracts data for inclusion in a DSS database Updates (adds, deletes, edits, changes) data records and

files Interrelates data from different sources Retrieves data from the database for queries and reports Provides comprehensive data security (protection from

unauthorized access, recovery capabilities, etc.) Handles personal and unofficial data so that users can

experiment with alternative solutions based on their own judgment

Performs complex data manipulation tasks based on queries

Tracks data use within the DSS Manages data through a data dictionary

The Capabilities of DBMS in a DSS


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2.6 Model Management

Model base Model base management system Modeling language Model directory Model execution, integration, and

command processor


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Model Base Contains routine and special statistical, financial,

forecasting, management science, and other quantitative models that provide the analysis capabilities in a DSS.

Model building blocks can be Employed on their own for applications Used as components of larger models Used to determine the values of variables and

parameters in a model Modeling tools

C+, JAVA, Excel


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Model execution is the process of controlling the actual running of the

model.

Model integration involves combining the operations of several models

when needed

Model command processor is used to accept and interpret modeling instructions

from the user interface component and route them to MBMS, model execution, or integration functions.


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2.6 Model Management : Structure

Models (Model Base)•Strategic, tactical, operational

•Statical, financial, marketing, management science, accounting, engineering, etc.

•Model building blocks

Model Directory

Model Base Management

•Modeling command: creation•Maintenance: update•Database interface•Modeling language

DataManagement

InterfaceManagement

KBSubsystem

Model execution, Integration, and

Command processor


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Major Functions of the MBMS

Create models Allows users to manipulate models Stores, retrieves and manages different types of

models Accesses and integrates the model building blocks Catalogs and displays the directory of models Tracks model data and application use Interrelates models with appropriate linkages with the

database Manages and maintains the model Uses multiple models


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2.7 Knowledge Management

Provides expertise in solving complex unstructured and semi-structured problems

Expertise provided by an expert system or other intelligent system

Advanced DSS have a knowledge based (management) component

Leads to intelligent DSS Example:

Data mining


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Major Functions of the KBMS

Providing tools for decision in special case Intelligent Decision modeling System Analysis for uncertainty situation


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2.8 User Interface Management

Includes all communication between a user and the MSS

Graphical user interfaces (GUI) Voice recognition and speech synthesis

possible

To most users, the user interface is the system


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Data ManagementAnd DBMS

KB Subsystem

Model ManagementAnd MBMS

User InterfaceManagementSystem (UIMS)

Natural Language Processor

InputActionLanguage

Output

Display Language

Printers, Plotters Users

Terminal

2.8 User Interface Management : Structure


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2.8 User Interface Management Major Capabilities of The UIMS Provides a graphical user interface-web browser Accommodates the users with a variety of input devices Presents data with a variety of formats and output devices Gives users help capabilities, prompting, diagnostic and suggestion

routines Provides interactions with the database and the model base Stores input and output data Provides color graphics, 3-dimensional graphics, and data plotting. Has windows to allow multiple functions to be displayed concurrently Can support communication among and b/w users and builders of

MSS Provides training by example Provides flexibility and adaptiveness Interacts in multiple, different dialog styles Captures, stores, and analyze dialog usage


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The User

Different usage patterns for the user, the manager, or the decision maker

Managers Staff specialists Intermediaries

1. Staff assistant2. Expert tool user3. Business (system) analyst4. GSS Facilitator


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DSS Hardware

Evolved with computer hardware and software technologies

Major Hardware Options Mainframe Workstation Personal computer Web server system

Internet Intranets Extranets


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Question ???

decision support system by simulation model (ajarn chat chuchuen)1 chapter 2 architecture of...

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